BOREAL LASER GasFinder2, Руководство по эксплуатации

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1.2
Boreal Laser Inc. GasFinder2 Operation Manual — System Description July 17th 2017
The two main parts of the equipment are the Gasfi nder2 and the Retrorefl ector .
GasFinder2
The • GasFinder2 transceiver contains the laser diode and electronics,
and can be mounted in a fi xed location or on a tripod for portable use.
The rear panel contains a Liquid Crystal Display (LCD) which displays
the concentration in ppm/ppmm with an R
2 or Light Value indicator.
When required, the display can also show the system parameters
which are accessed with a keypad. The rear panel also contains the
power and I/O connectors. Specifi cations of the
GasFinder2 are
given on page 1.3. The unit is confi gured by entering values with a
keypad or remotely with a terminal program or
GasViewOP . These
values are described in the Menu Structure which contains three
subsections:
Main Menu — contains items such as path lengths, units, memory, etc. •
System Menu — contains arrays, real time clock, baud rates, etc. •
Password Protected Menu — contains calibration values. •
Details of the menus are given in Section 5 and a fl ow diagram is shown in Appendix A.
Retrorefl ector
Retrorefl ectors (Retros) • are passive units and refl ect the laser signal back to the GasFinder2 .
For short distances (up to 50m), refl ective tape can be used. For greater distances gold
plated, corner cube retros should be used.
The retros allow for alignment tolerance (i.e., they refl ect the light straight back to source
independent of the angle of the refl ector). The sealed enclosures can be provided with hoods,
desiccant packs, and in some cases heaters to reduce the effect of rain, condensation or
frost. The type of retro used will depend on the path length, atmospheric conditions such as
dust or fog, and the type of laser. Details of the retros are given on page 3.4.
Array containing
21 retrorefl ectors
Enclosure containing
4 retrorefl ectors and
a thermostatically
controlled heater
Retro Tapes
Gasfi nder2 mounted
on the small X-Y mount
which is attached to
the tripod